Instrotech

WT1 Weight Transmitter

WT1 Weight Transmitter

Sku: VIS-WT1

The WT1 Weight Transmitter provides stable, accurate weight measurement for systems using 1–4 load cells. Featuring two logic inputs and two logic outputs as standard, it can also be configured with RS-232C or RS-485 serial communication supporting ASCII or Modbus RTU protocols for integration with PCs and PLCs.

Product Information

The WT1 Weight Transmitter provides accurate readings at an excellent price. When connected to a system of 1–4 load cells, the WT1 will convert output signals into stable, accurate weight values. This model comes with two logic outputs and two logic inputs as standard. The WT1 can be fitted with either an RS-232C half-duplex or RS-485 full duplex serial door; both serial doors can be loaded with ASCII or Modbus RTU protocols to enable communication with a PC or PLC.

 FEATURES 

  • High performance and long-term reliability 
  • Assembly “snap-on” DIN rail (certified to EN50022 standards) 
  • Able to interface with intrinsically safe barriers for use in hazardous areas 

OPTIONS 

  • Analogue option available 
  • RS-485 full duplex output available 

PERFORMANCE 

Power Output 4 V 

Measuring Range –4 to +4 mV/V 

Input Sensitivity 0.02 V/division 

Linearity <0.01% of full scale 

Gain Drift <0.001% of full scale ˚C 

D/A Convertor 24 bit 

Maximum Load Cells 4 at 350 Ω 

Internal Resolution 16,000,000 counts 

Visible Resolution 60,000 counts (visible on net weight) 

Divisions Value (Adjustable) 0.001 to 50 

Filter (Adjustable) 0.2 to 25 Hz 

ENVIRONMENTAL 

Operating Temperature –10 to +50 ˚C 

Storage Temperature –20 to +60 ˚C 

DISPLAY AND KEYBOARD 

Display 5 digit, 7 segment, LED 

Digit Height 7 mm 

Keyboard 3 key mechanical keyboard 

ELECTRICAL 

Voltage 24 ±10% VDC 

Wattage 2 W 

INPUT AND LOGICS 

Logic Input 24 VCC (external voltage), 2 opto-isolated, PNP 

Logic Output 2 solid state relays (maximum load 24 VDC/100 mA each)

ANALOG OUTPUT (OPTIONAL) 

Output 16 bit, opto-isolated 

Tension 0 to 5/10 V, (R Min 10 kΩ) 

Current 0/4 to 20 mA (R max 300 Ω) 

Linearity <0.03% of full scale 

Temperature Drift <0.002% full scale ˚C 

SERIAL COMMUNICATION 

Serial Output #1 RS-485 full duplex with ASCII or Modbus RTU protocol 

Baud Rate 2400 to 115200 (adjustable) 

Serial Output #2 (with Analogue Output option) RS-232C half duplex with ASCII or Modbus RTU protocol 

Baud Rate 2400 to 115200 (adjustable) 

ENCLOSURES 

Dimensions 119 x 112 x 23 mm, L x H x D 

Mounting DIN rail 

Electrical Connections 5.08 mm terminal screw pass 

APPROVALS 

EN EN61000-6-2, EN61000-6-3 for EMC; EN61010-1 for electrical safety 

 

 

 Various industrial systems 

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